# net: l2tp: do not propagate multicast notification errors

CVE record · `CVE-2026-80996`

- **Identifiers:** `CVE-2026-80996`
- **State:** Confirmed
- **Severity:** No CVSS score
- **Critical:** No
- **CNA:** Linux
- **Technologies:** [Linux kernel](https://agentprime.io/advisories/technology/linux-kernel.md)
- **Published:** 11 Sept 2026
- **Updated:** 30 Oct 2026
- **Reviewed by a person:** No

Published by the CVE Program (CNA: Linux) at 11 Sept 2026, 19:42 UTC. agentprime has not analysed this yet, so whether it affects any app is not known. This CVE names a vendor and product rather than a package, so the lockfile check doesn’t match it.

## Affected products, as the CNA wrote them

- Vendor: Linux. Product: Linux.
  - affected: `33f72e6f0c67f673fd0c63a8182dbd9ffb8cf50b to before 73761c3cfb6d86392d63335d10f464b9d43275a7` (git)
  - affected: `33f72e6f0c67f673fd0c63a8182dbd9ffb8cf50b to before 7efe1c31e0903a5aa796feb96d3adab574b7ff41` (git)
  - affected: `33f72e6f0c67f673fd0c63a8182dbd9ffb8cf50b to before 0fe037d5eaad938aa3e9143ee071aa237750b42b` (git)
  - affected: `33f72e6f0c67f673fd0c63a8182dbd9ffb8cf50b to before 9c340473f4822bb31b151c19afd17448eda5acd1` (git)
  - affected: `33f72e6f0c67f673fd0c63a8182dbd9ffb8cf50b to before 50c4038f1670bf9a80c6a58ae83d1602decd8481` (git)
  - affected: `33f72e6f0c67f673fd0c63a8182dbd9ffb8cf50b to before af20e269f7459d2ce69887fdf2fad7caf986c865` (git)
  - Other versions: unaffected
- Vendor: Linux. Product: Linux.
  - affected: `4.0`
  - unaffected: `before 4.0` (semver)
  - unaffected: `6.1.191 to 6.1.*, inclusive` (semver)
  - unaffected: `6.6.160 to 6.6.*, inclusive` (semver)
  - unaffected: `6.12.109 to 6.12.*, inclusive` (semver)
  - unaffected: `6.18.50 to 6.18.*, inclusive` (semver)
  - unaffected: `7.2.4 to 7.2.*, inclusive` (semver)
  - unaffected: `7.3 to *, inclusive` (original_commit_for_fix)
  - Other versions: affected

## Not analysed yet

We haven’t published our own analysis of this CVE. If a person reviews it, this page will say what’s affected and what has to be true for it to matter.

## Severity and exploitation

No source has published a CVSS score for this record yet.

- **CISA KEV:** Not listed.
- **EPSS:** 0.0021, the 10th percentile, on 14 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.

## Timeline

This record came from the full history of the CVE Program, published 11 Sept 2026. New records show when each source confirmed them.

## Sources

- [CVE List: CVE-2026-80996](https://www.cve.org/CVERecord?id=CVE-2026-80996)
- [NVD: CVE-2026-80996](https://nvd.nist.gov/vuln/detail/CVE-2026-80996)

### References from the CNA

- <https://git.kernel.org/stable/c/73761c3cfb6d86392d63335d10f464b9d43275a7>
- <https://git.kernel.org/stable/c/7efe1c31e0903a5aa796feb96d3adab574b7ff41>
- <https://git.kernel.org/stable/c/0fe037d5eaad938aa3e9143ee071aa237750b42b>
- <https://git.kernel.org/stable/c/9c340473f4822bb31b151c19afd17448eda5acd1>
- <https://git.kernel.org/stable/c/50c4038f1670bf9a80c6a58ae83d1602decd8481>
- <https://git.kernel.org/stable/c/af20e269f7459d2ce69887fdf2fad7caf986c865>

Facts on this page come from the CVE List as the CNA published them, with CVSS from the sources named above, CISA KEV and FIRST EPSS. Vendors, products and versions are shown as the CNA wrote them. We don’t reproduce the CVE’s description.

## Check whether this affects you

This CVE names a vendor and product rather than a package, so the lockfile check doesn’t match it. Compare the affected versions above with what you run.

- With the agentprime MCP server (<https://api.agentprime.io/mcp>), `get_advisory` returns this record and `search_advisories` finds related ones. Setup: <https://agentprime.io/mcp.md>
- As JSON: <https://api.agentprime.io/v1/advisories/CVE-2026-80996>
- Everything that needs attention now: <https://agentprime.io/advisories/critical.md>

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The web page: <https://agentprime.io/advisories/CVE-2026-80996/>. Everything for agents: <https://agentprime.io/llms.txt>.